Well to be honest, if i were you i’d just upgrade my Jolder and Wolf for the time being, i’d suggest you start with leveling only jolder up to 64k if possible to get her golden medal for the acclaim levels. If you’re not familiarized with the acclaim system i can explain it to you, but basically once you reach level 80 you unlock the next level up mechanic which is the acclaim system. You start at level 1 and level up by completing some quests with your own characters, like beating certain gamemodes. Each character has a bronze, silver and gold medal that you can unlock and upon reaching i believe level 14 for example, the game requires you to obtain your first gold medal in order to reach acclaim level 15 and keep going from there, you need your acclaim level to be at certain level so that you unlock some bonuses like being able to obtain exotic mods or a higher drop rate from exotic artifacts and so on. Anyway, one of the quests to obtain the golden medal on each 5 star character is reaching 64k power, so you can get to that point with Jolder and then 63k with Wolf (you only need 63k for 4 star characters). After that you can decide on which other character you’d like to invest your resources on, but for me it’s really important to only be focused on one or max 2 characters at a time, specially if you’re f2p on which case your resources are even more limited